Apparatus for the manufacture of plate-ice.



H-. SLOAN. APPLBATUS FOR THE MANUFAOTURE 0F PLATE 10E.

APPLICATION FILED SEPT. 29, 1906.

Patented June 13, 1911.

3 SHEETS-SHEET 1.

11. SLOAN. APPARATUS FOR THE MANUFACTURE OF PLATE 10B.

APPLICATION FILED SEPT. 29, 1906.

Patented June 13,1911.

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sateen nanny sheen, or nnooxnvu, unw'roan'assxenon, BY MESNE ASSIGNMENTS, TO

NEW JERSEYE'PATEENT HOLDING- COMPANY, A- CORPORATION OF NEW YORK.

Specification of Letters Patent.

APPARATUS FOR THE MANUFACTURE OF PLATE IGE.

Patented June 13, 191i.

. a iicaun'fiied September 29, 1906. SerialNo. 336,713.

To all whom it may concern: Be it knownthat LHARRYSLoAN, a citizen of the United States, and a resident of the borough of Brooklyn, in the county of Kings'and State of New York, have invented a certain new and useful Improvement-in Apparatus for the Manufacture of PlateJce, ific ation. j

The invention relates to apparatus for the manufacture of plate ice and is an improvement uponthe apparatus disclosed in U. S. Letters Patent.No.682,659, granted to l/V. J. \Voodcock, September 17, 1901, whereby plate ice is produced by freezing water at a temperature below Fahrenheit, in con- -\tact. with a freezing plate having aiyielding surface. In my .present apparatus I preferably employ such a freezing plate, and in 'connection therewith the construction more particularly hereinafter claimed whereby it is possible to secure amore economical production of said plate ice.

In the accom 'ianying drawings-Figure 1 is a vertical transverse scctionalview showing a vat, a freezing-plate, and certain acces: series; Fig. 2 is a vertical sectional view, showing-a pair of freezingplates, the view being taken just inside of the vatovall; Fig. 3 is a plan view of the same; Fig. 4: is a 'side elevation, Fig. 5 isan, end elevation,

and Fig. 6 is a partial bottomview, of an ice-plate liftingand dividing-grid; Fig. is a perspective view of part of said grid; Fig. 8 is an 'end View of a wedge-shaped freezing-plate; Fig. 9 is a side elevation of a modified form of wedge-shaped freezingplate; and Fig. 10 is a vertical sectional view through, or transversely of, two such mod ified plates. I

The tank 1 containing the water to be frozen, has on its vertical walls, ledges 2, upon which rest the arms 4, projectingfrom the freezing plates 3, which plates may also be supported on blocks 5 of wood. Each freezing plate consists of a sheet of metal 6,

havingon its rear side projecting angle bars ,7, which bars are bolted together as best shown in Fig.8, to produce a. wedge shaped box.

of which the following is a spec-' .up on each side of the Fluid refrigerant passes from a supply main 9, through pipes 8, to the lower part of the interior of the freezing plates 3, and

escapes at the upper portion of said plates by the pipes 10, which connect with main 11. In the pipes 8 and 10 may be arranged flexible joints 8* and 10*.

When the two freezing plates 3 are, in working position a wedge shaped space wider at the top than at the bottom is formed between them, as shown in Fig. 2. Secured to the bottom of the opposing freezing surfaces of the plates are parallel flanges l4, 16, between which lie the pipes 15, which extend space between the plates. Movable end plates 17 conforming to the shape of said space may be inserted therein to protect the vertical portions of said pipes. The freezing surfaces of the plates 3, the flanges 14 and the movable end plates 17, together form a receptacle in which the ice cake is formed.

In the lower part of the tank and lying between the supporting blocks 5 is a pipe 1.2,having upwardly turned nozzles 13. This pipe may connect with any source of sterilizing fluid, such as ozonized air which escapes in jets from the nozzles 13, and so passes upward in the space between the freezing plates.

The operation is as follows :The ice is formed between the freezing plates 3, beginning at the surface of each plate and increasing in thickness until the facesof the respective cakes meet and unite. Meanwhile,

jets of ozonized air are --delivered from the nozzles 13 into the space between the plates, thus sterilizing the ice during its formation. As soon as the said ice cake, any warm fluid is passed through the pipes 15' to thaw thecake at its edges clear of plates 17 and flanges 16, and thawing off from the freezing surfaces of plates 3 may also be effected in any known way, as for example, by causing a relatively warm liquid to circulate through said plates. By reason of the decreasing thickness of the wedge shaped space between the plates 3, the thawed ofi cake can easily be lifted out by any suitable means; while the mounting space is filled with the of the plates 3 on the sliding arms 4 permits said plates to yield slightly to internal pressure exerted by the ice as it forms upon them and after the uniting of the faces of the two ice cakes. In order to enable the completed cake to be conveniently divided into smaller blocks, I provide a grid composed of plates 18 and 19 which are perforated, as at 20, to allow of the circulation of the aforesaid sterilizing agent. The plates' 18 and 1-9 are of such widths that, when the grids are properly centered in the spaces between the freezing-plates, they will be separated from said freezing-plates by a considerable'distance, as an inch or more. The vertical'iplates 19 are united at their upper ends bya plate or other metal tie 21, to which eyes 22 are attached to receive the hooks of hoisting tackle. It will be noted that the plates 18 19 form means for hastening the processof-freezing in that they conduct heat "along. planes transverse to the forming ice-plates to points near or adjacent to the freezing-plates.

In order to loosen the ice from the grid, the jlatter may be struck with mallets or other means, and the operation may be facilitated by heating the ice along the planes of the plates forming the grid, as by passing live steam through pipes '23, which are brazed, soldered, or otherwise attached to the edges of said plates 18 19. The said pipes 23 should not have an outside diameter greater than the thickness of the plates 18 19. The reference 24 designates a supply pipe for the live steam, the upper ends of the pipes 23 being connected with said supply pipe 24, and the other ends of the pipes 23 being plugged during the freezing of the ice, and being unplugged before the steam is turned on, so that the steam will have free passage through said pipes 23.

. ,-A modified form of freezing plate 3 is illustrated in Figs. 9 and 10, wherein are shown pipes 25 and arc-couplings 26, the said pipes decreasing in outside "diameter from the bottom of the plate ,to the top thereof, though two. or more successive pipes may have substantially the same diameter. These plates 3", as well as the plates 3., are of thicknesses such that, at any point. intermediate the top and the bottom of the freezing-plate, the thickness of the plate is not greater than is the thickness at any lower point. The ice is loosened from the plates 3 in the manner hereinbefore mentioned.

What I claim as new and desire to secure by Letters Patent of the United States is 1. The combination with a tank, of two hollow wedge-shaped freezing plates located therein and having their freezing surfaces opposite to one another and spaced apart I cake of ice filling the intervening s ace, 3

plates forming end and bottom walls 0 the space, and a grid located between said freezing surfaces and in said receptacle substantially as described. I

3. The combination with a tank, of two hollow wedge-shaped freezing lates yieldinglymounted in said tank and aving their freezing surfaces disposed opposite'one another and spaced apart to permit of the format-ion of an ice cake filling the intervening space, means forming end and bottom walls for the receptacle, said walls and the freezing surfaces of the plate together forming the receptacle in which the freezing occurs, and a grid located between said freezing surfaces.

4. The combination with a tank, of two wedgeshaped freezing plates having their freezing surfaces disposed opposite one another, and at such distance apart as to permit the formation of an ice cake fillingthe intervening space, and a erforated grid located between said freezing plates, substantially as described.

5. The cdmbin'ation with a tank, of two wedge-shaped freezing plates yieldingly mounted in said tank and havin their freezing surfaces disposed at such distance apart as to permit the formation of an ice cake filling the intervening space, means forming end and bottom walls of said space, and means for delivering jets of sterilizing fluid in the said receptacle.

6. The combination of a tank, two freez-,

ing surfaces disposed opposite one another and at such distance apart as to permit the formation of an ice cake filling the intervening space, inwardly projecting flanges near the lower edges of said surfaces, two vertical plates extending transversely between and respectively located near the vertical edges New York and State of New York this of said surfaces, and ducts on the exterior 22nd day of Sept, A. D. 1906.

of said flanges and transverse plates; the IKRRY L A J. said freezing surfaces, flanges and transverse I s O \I 5 plates forming a chamber wherein the ice Witnesses:

cake 15 produced. A. T. STQUTENBURGH,

Signed at New York in the county of 4 R. \V. BARKLEY. 

